It would be nice to be able to enter in the quantity increment (right now +- 1, but let's say something comes in only quantities of 6 like macaroons :)
Another option is to set the quantities (e.g. 6, 12, 18, 24) instead of incrementing.
I'm also seeking for the same, have you able to manage this problem anyway?
Jelke Boonstra commented
Would be a, relative simple, but very welcomed addition!